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代码实例0 f1 {2 O/ e2 V+ l: s4 P9 r3 n
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- hTimer = TIMER_open(TIMER_DEVANY,0); /* open a timer */
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- /* Configure the timer. 1 count corresponds to 4 CPU cycles in C67 */
- /* control period initial value */
- TIMER_configArgs(hTimer, 0x000002C0, 0xFFFFFFFF, 0x00000000);
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- /* Compute the overhead of calling the timer. */
- start = TIMER_getCount(hTimer); /* to remove L1P miss overhead */
- start = TIMER_getCount(hTimer); /* get count */
- stop = TIMER_getCount(hTimer); /* get count */
- - ]# }7 g$ I$ f2 _
- overhead = stop - start;
- start = TIMER_getCount(hTimer); /* get count */
# G9 P& ?7 _2 @7 X6 H# U. ~$ B- /* Call a function here. */
9 R; a" B- ~; M, `# h3 k- /* get count */
- diff = (TIMER_getCount(hTimer) – start) ? overhead;
- TIMER_close(hTimer);
- printf(”%d cycles \n”, diff*4);
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注意，C6713上定时器的一个计数值对应4个时钟周期。 A5 @' E7 J5 ^$ M5 n
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overhead表示Timer本身配置过程的时钟消耗，所以有diff计算，5 w) N& A! t4 @5 g: P) |* q
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diff = (TIMER_getCount(hTimer) – start) ? overhead; /* get count */
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发表于 2019-8-14 09:30
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淘帖
支持！
反对！